The good news I can offer, is I have been in and out of permanent AFib for 15 years
and have been on
Warfarin even when not known to be in AFib
and I no blood clots have ever been detected. Some people have trouble with Warfarin, it takes a very regular diet to hold steady. Aspirin us usually, I believe, used if the patient can tolerate, taken with food I think most of us can. Warfarin requires reglar blood coagulation tests, aspirin doesn't.